Working examples for the Cactus Rev 2 with Atmega32u4 and ESP8266.

Programming a robot and the control of LEDs using AVR LIBc library (C++)

Prototype of the GPIO part of Iris 16, where multiple pins are combined to allow for more diverse I/O options.

Prototype of the 12-segment ring display of Iris 16. Uses bit-code-modulation and cross-package charlieplexing to drive 36 LEDs with only 7 pins at maximum power.

Playstation "Densha de Go!" controller to USB converter for JR East Train simulator

2018: ATmega32u4 Arduino Bass, Treble, and Volume USB Controller with Keyboard Function LED. Example code and construction details for DFRobot Beetle, Sparkfun Pro Micro, and Arduino Micro boards.

keyboard with look of disapproval on it

A simple LED strip controlled with a Pro Micro and a rotary encoder

Efficient graphics function library for OLED display module (monochrome, 128 x 64 pixels) using SH1106 controller.

An Arduboy clone. I can't think of a witty name.

See Gitlab repo for any updates (although none are planned)

Programs for AVR Microcontroller

Hardware device for controlling sound volume on a PC

Custom small keyboard using Teensy 2.0 (ATmega32U4)

Allegro MicroSystems A4963 Driver Software for MCP2210 and Atmega32u4

Simple driver for AT keyboard (PS2 or DIN)

Yet another "easy" and fun development platform based on ATmega32U4 with USB PD protocol support and many other on-board goodies!

This project is a demonstrative example of how to use an Arduino device to send predefined commands to a computer.